Busbars docking platform

ABSTRACT

A platform for connecting busbars has a loading unit having a blind hole on a docking surface for receiving a connecting rod, an action unit used for impacting the loading unit or a busbar to push the connecting rod into a pre-hole on the busbar, a limit unit used for stopping the busbar from moving along its length direction, and a support unit used for supporting the action unit and the limit unit. The connecting rod is assembled to the first busbar by the action unit combined the loading unit and then the connecting rod already assembled to the first busbar is assembled to the second busbar by the action unit.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.16/819,047, filed Mar. 14, 2020, which claimed priority to ChinesePatent Application No.

201910760403.9, filed on 16 Aug. 2019, the disclosures of which arehereby incorporated herein by reference in their entireties.

BACKGROUND OF THE INVENTION

The invention relates to an electric device, especially to a platformused for connecting busbars.

In the field of power distribution, partly overlapping two busbars isusually used to be a connection manner between two busbas, then boltsand nuts are used to fasten them. As required by this connection manner,there is a certain length of two busbars needed to overlap for keeping acurrent density of a touching surface within a normal range of values soas to make the connecting part comply requirement of related standard.In order to keep a low temperature rising of an electric device, usuallya length of overlapping is increased for increasing a touching surfaceso as to reduce a current density thereof. However, increasing thelength of overlapping may increase busbars consumption resulted inincreasing cost. Electric clearance or phase distance between busbarsmay be reduced as a result of bolts used for fastening, in order not toreduce the electric clearance or phase distance, a distance betweenbusbars needs to be increased, however increasing the distancenecessarily enlarge an occupation space of busbars. How to increase atouching surface for reducing a temperature rising not resulted inreducing electric clearance or phase distance or enlarging occupationspace of busbars, there is a new manner of connecting busbars to solvethe above problem, busbars are connected in a form of butt-and-buttconnecting via connecting rods, see FIG. 18.

BRIEF SUMMARY OF THE INVENTION

The present invention aims to provide a docking platform for assemblingconnecting rods into busbars so as to dock two busbars together.

Such object is achieved by providing a busbars docking platform asdefined in claim 1. Further advantageous according to the invention willbe apparent from dependent claims.

The invention provides a busbars docking platform, the platformcomprises a loading unit, an action unit, a limit unit and a supportunit, the loading unit has a blind hole on a docking surface forreceiving a connecting rod, the blind hole has a clearance fit with theconnecting rod, the action unit is used for impacting the loading unitor a busbar to push the connecting rod into a pre-hole on the busbar,the limit unit is used for stopping the busbar from moving along itslength direction. The support unit comprises a first shaft, a secondshaft parallel to the first shaft, a receiving unit slidably connectingwith the first shaft and the second shaft, a trestle used for supportingthe first shaft and the second shaft, a pedestal used for supporting thetrestle, wherein the receiving unit comprises a receiving blockcooperating with the busbar, a receiving groove penetrating through thereceiving block to receive the busbar along its width direction, a limitshaft movably inserting into the receiving block for going in and out ofthe receiving groove to stop the busbar from moving along its widthdirection. The receiving groove is arranged axially with the first shaftand between the first shaft and the second shaft, the limit unitcomprises a first threaded rod parallel to the first shaft, a secondthreaded rod parallel to the first shaft, a limit block removablyconnecting with the first threaded rod and the second threaded rod, aconnecting block connecting with the first threaded rod and the secondthreaded rod and cooperating with the action unit. The action unitcomprises a first base fixedly connecting between the first shaft andthe second shaft, a second base fitting with the connecting block of thelimit unit, an end portion outwardly extending from the first base toimpact the busbar, a driving mechanism housed in the first base and thesecond base to drive the end portion.

The invention further provides an operation method for operating busbarsdocking platform for assembling connecting rods into busbars to dock twobusbars together, the operation method comprises following steps.

S1 Trigger a first release member to keep an end portion of an actionunit at an exsertion state.

S2 Put a first busbar in a receiving groove of a second receiving unitand of a third receiving unit, insert a limit shaft into the secondreceiving unit and insert a limit shaft into the third receiving unit,arrange the limit shaft to insert into the receiving groove.

S3 Put a loading unit in the receiving groove of a first receiving unit.

S4 Arrange a docking surface of the first busbar to touch a dockingsurface of the loading unit, arrange a surface of the loading unit awayfrom the docking surface to touch an end portion of the action unit,adjust and fasten a limit block of a limit unit to arrange the limitblock to touch a surface away from the docking surface of the firstbusbar.

S5 Remove the loading unit.

S6 Load a connecting rod to the loading unit.

S7 Operate a second release member to retract the end portion of theaction unit and to keep the end portion at a retraction state.

S8 Turn a handle to compress a spring of a driving mechanism and to keepthe spring at a first compression state.

S9 Put the loading unit loaded with the connecting rod in the receivinggroove of the first receiving unit, arrange the surface away from thedocking surface of the loading unit against the end portion of theaction unit, insert the limit shaft into the first receiving unit toinsert the limit shaft into the receiving groove.

S10 Trigger the first release member to exsert the end portion of theaction unit to impact the loading unit so that the connecting rod on theloading unit inserts into a pre-hole of the first busbar.

S11 Trigger the second release member to retract the end portion of theaction unit.

S12 Draw the limit shaft out of the receiving unit to take the firstbusbar and the loading unit out from the receiving groove of thereceiving unit, remove the loading unit to finish assembling theconnecting rod into the first busbar.

S13 Trigger the first release member after the spring of the drivingmechanism is compressed and kept at the first compression state byturning the handle.

S14 Put a second busbar in the receiving groove of the third receivingunit and in the receiving groove of a fourth receiving unit, insert thelimit shaft into the third receiving unit and of the fourth receivingunit to insert the limit shaft into the receiving groove.

S15 Put the first busbar already assembled with the connecting rodbetween the end portion of the action unit and the second busbar toarrange that the docking surface of the first busbar touches the dockingsurface of the second busbar and that the surface away from the dockingsurface of the first busbar touches the end portion of the action unit,adjust and fasten the limit block of the limit unit to arrange the limitblock to touch a surface away from the docking surface of the secondbusbar.

S16 Remove the first busbar already assembled with the connecting rod.

S17 Trigger the second release member to retract the end portion of theaction unit and to keep the end portion at the retraction state.

S18 Turn the handle to compress the spring of the driving mechanism andto keep the spring at the first compression state.

S19 Put the first busbar already assembled with the connecting rod inthe receiving groove of the first receiving unit and the receivinggroove of the second receiving unit to arrange the surface away from thedocking surface of the first busbar against the end portion of theaction unit, insert the limit shaft into the first receiving unit andinto the second receiving unit.

S20 Trigger the first release member to exsert the end portion of theaction unit to impact the first busbar so that the connecting rod on thefirst busbar inserts into a pre-hole of the second busbar.

S21 Trigger the second release member to retract the end portion of theaction unit.

S22 Draw the limit shaft out of the receiving unit to take the firstbusbar and the second busbar out from the receiving groove of thereceiving unit, the connecting rod is assembled in the first busbar andthe second busbar to finish docking the first busbar and the secondbusbar.

The invention further provides a busbars docking method for assemblingconnecting rods into busbars to dock two busbars together, the methodcomprises arranging a deep-freezing process for a plurality ofconnecting rods after been loaded in a loading unit, arranging a heatprocess for a docking surface of a first busbar, a plurality ofconnecting rods been axially inserted into corresponding pre-holes on adocking surface of the first busbar by a way that an action unit impactsthe loading unit, arranging a deep-freezing process for the connectingrod after been assembled in the first busbar and arranging a heatprocess for the docking surface of the second busbar, pre-holes on adocking surface of a second busbar been axially sheathed on thecorresponding connecting rods assembled to the docking surface of thefirst busbar by a way that the action unit impacts the second busbar.

Advantageous Effects

(1) The busbars docking platform and operation method thereof disclosedby the application achieve that a plurality of connecting rods areassembled simultaneously into a busbar in stages and then two busbarsare docked together well.

(2) The blind hole arranged to the loading unit has a clearance fit withthe connecting rod, such arrangement is convenient for the loading unitto remove for next assembly process after that the connecting rods areassembled into the busbar and increases reusability of the loading unit.

(3) Because the loading unit has an identical outline to the busbar, theloading unit is also applicable for the receiving unit used forreceiving the busbar, such arrangement increases interoperability of theloading unit.

(4) A deep-freezing process for connecting rods and a heat process forpre-holes of a busbar change assembly relation between the connectingrod and the pro-hole of the busbar from interference fit to clearancefit, so it is only need to impact the connecting rod quickly into thepre-hole when the connecting rod is assembled, it is no necessary for anend portion of an action unit to have much thrust force.

(5) Arrangement that a plurality of connecting rods can be loadedsimultaneously to the loading unit increases docking efficiency forbusbars.

(6) Clearance fit between the connecting rod and the pre-hole of thebusbar after heat and freezing process combined with chamfer on an endsurface of a connecting rod also can reach successful assembly betweenthe connecting rod and the pre-hole under high speed impact of theaction unit even if coaxiality between the connecting rod and thepre-hole is not very good.

(7) Because the end portion of the action unit impacts the loading unitother than the connecting rod, hypothermia of the connecting rod can notbe effected by impact from the action unit, the connecting rod stillkeeps at shrinkage state so as to inserts easily into the pre-hole ofthe busbar.

(8) Because a limit block of a limit unit well touches an end of thebusbar and a connecting block of the limit unit well touches a secondbase of the action unit, the busbar can not move along the direction ofmovement of the connecting rod when the connecting rod inserts into thebusbar, such arrangement achieves a successful assembly of theconnecting rod.

(9) Because a support unit comprises a first shaft and a second shaftparallel to the first shaft and because a receiving unit slidablyconnects with the first shaft and the second shaft, the receiving unitmoves smoothly and can receive busbar of different length by cooperationwith a plurality of receiving units.

(10) Because a receiving groove receives the busbar along widthdirection of the busbar, it is unhindered to put the busbar into thereceiving groove over the docking platform.

(11) Because a limit shaft arranged to the receiving unit stops thebusbar from moving along width direction during impact process, theconnecting rod is assembled successfully.

(12) Because the limit shaft movably inserts into a receiving block, itis convenient for the receiving groove to change from openness toclosure according to operation needs, openness is convenient to put thebusbar, and closure is used to stop the busbar from moving along itswidth direction.

(13) The limit block is clamped at different position on a threaded rodby adjusting nuts at different position on the threaded rod to limitbusbars of different length, such arrangement increases usability of thebusbars docking platform for busbars of different length.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWINGS

Further characteristics and advantages of the invention will emerge fromthe description of preferred, but not exclusive embodiments of a busbarsdocking platform according to the invention, non-limiting examples ofwhich are provided in the attached drawings, in which:

FIG. 1 is a 3d-drawing of a busbars docking platform of the embodimentof the present invention;

FIG. 2 is an exploded 3d-drawing of FIG. 1;

FIG. 3 is a 3d-drawing of the platform showing a position of a limitblock during assembling a first busbar;

FIG. 4 is a 3d-drawing of the platform showing a position of a limitblock during assembling a second busbar;

FIG. 5 is a 3d-drawing of the platform showing an assembly process for asecond busbar;

FIG. 6 is a 3d-drawing of the platform showing two busbars dockingtogether;

FIG. 7 is a 3d-drawing of the platform, wherein busbars are removedafter finishing docking process;

FIG. 8 is a 3d-drawing of an action unit, wherein an end portion is atan exsertion state;

FIG. 9 is a 3d-drawing of an action unit, wherein an end portion is atan retraction state;

FIG. 10 is a 3d-drawing of FIG. 8 from another view;

FIG. 11 is a 3d-drawing of a receiving unit disclosed in the embodiment;

FIG. 12 is a 3d-drawing of a receiving unit assembled with a busbardisclosed in the embodiment;

FIG. 13 is a 3d-drawing of a receiving unit removing a busbar disclosedin the embodiment;

FIG. 14 is a 3d-drawing of a loading unit assembled with a connectingrod in the embodiment;

FIG. 15 is an exploded 3d-drawing of FIG. 14;

FIG. 16 is a sectional 3d-drawing of the loading unit disclosed in theembodiment;

FIG. 17 is a sectional 3d-drawing of the loading unit, wherein theconnecting rod is assembled to the first busbar by the loading unit;

FIG. 18 is a sectional 3d-drawing of busbars docked together byconnecting rods;

FIGS. 19-24 are sectional 3d-drawings of the platform showing anassembly process for the first busbar.

LIST OF REFERENCE CHARACTERS

-   -   1. connecting rod; 101. first busbar; 102. second busbar;    -   2. loading unit; 201. blind hole; 3. action unit;    -   301. first base; 302. second base; 303. end portion;    -   304. handle; 305. first button; 306. second button;    -   5. limit unit; 501. first threaded rod; 502. second threaded        rod;    -   503. limit block; 504. connecting block; 6. support unit;    -   601. first shaft; 602. second shaft; 7. receiving unit;    -   701. receiving block; 702. receiving groove; 703. limit shaft;    -   704. first receiving unit; 705. second receiving unit; 706.        third receiving unit;    -   707. fourth receiving unit.

DETAILED DESCRIPTION OF THE INVENTION

It is need to preprocess busbars before docking process, a pre-hole isarranged to a docking surface which is for connecting so as to receive aconnecting rod, a depth of the pre-hole is slightly greater than half ofa connecting rod. A length direction of the busbar is an axial directionof the busbar, a width direction of the busbar is a direction which hasa greater dimension in busbar cross section, a thickness direction is adirection which has a less dimension in busbar cross section.

FIG. 1 is a 3d-drawing of a busbars docking platform of the invention,the platform comprises a loading unit 2, an action unit 3, a limit unit5, a support unit 6, wherein the loading unit 2 has a blind hole 201 ona docking surface for receiving a connecting rod 1, the blind hole 201has a clearance fit with the connecting rod 1. The action unit 3 is usedfor impacting the loading unit 2 or a busbar to push the connecting rod1 into the pre-hole on the busbar. The limit unit 5 is used for stoppingthe busbar from moving along its length direction.

Referring to FIG. 2, the support unit 6 comprises a first shaft 601, asecond shaft 602 parallel to the first shaft 601, a receiving unit 7slidably connecting with the first shaft 601 and the second shaft 602, atrestle used for supporting the first shaft 601 and the second shaft602, a pedestal used for supporting the trestle. There are fourreceiving units 7 in this embodiment, they are a first receiving unit704, a second second receiving unit 705, a third receiving unit 706 anda fourth receiving unit 707. Because the support unit 6 comprises thefirst shaft 601 and the second shaft 602 parallel to the first shaft 601and because the receiving unit 7 slidably connects with the first shaft601 and the second shaft 602, the receiving unit 7 moves smoothly andcan receive a busbar of different length by cooperation with a pluralityof receiving units 7.

Referring to FIG. 12 and FIG. 13, the receiving unit 7 comprises amounting plate, the receiving block 701 removably connected to themounting plate, two sliding blocks removably connected to the mountingplate. The receiving block 701 is arranged at a center position of alength direction of the mounting plate, the two sliding blocks aremirror images to each other concerning a center surface of the lengthdirection of the mounting plate, the sliding block and the receivingblock 701 are arranged to opposing side of the mounting plate. Whereinthe receiving block 701 is used for receiving the busbar, the receivingblock 701 comprises a receiving groove 702 and a limit shaft 703, thereceiving groove 702 penetrates through the receiving block 701 toreceive the busbar along its width direction, see FIG. 11. The receivinggroove 702 is arranged axially with the first shaft 601 and between thefirst shaft 601 and the second shaft 602, the limit shaft 703 movablyinserts into the receiving block 701 for going in and out of thereceiving groove 702 to stop the busbar from moving along its widthdirection. Because the receiving groove receives the busbar along widthdirection of the busbar, it is unhindered for an operator to put thebusbar into the receiving groove over the docking platform, sucharrangement increases assembly efficiency. The limit shaft 703 arrangedto the receiving unit stops the busbar from moving along width directionduring impact process, such arrangement is good for the connecting rodto assemble successfully.

Referring to FIG. 2, the limit unit 5 comprises a first threaded rod 501and a second threaded rod 502 both parallel to the first shaft 601, alimit block 503 removably connecting with the first threaded rod 501 andthe second threaded rod 502, a connecting block 504 connecting with thefirst threaded rod 501 and the second threaded rod 502 and cooperatingwith the action unit 3.

Referring to FIG. 8, the action unit 3 comprises a first base 301fixedly connecting between the first shaft 601 and the second shaft 602,a second base 302 fitting with the connecting block 504 of the limitunit 5, an end portion 303 outwardly extending from the first base 301to impact the busbar, and a driving mechanism housed in the first base301 and the second base 302 to drive the end portion 303. Because thelimit block 503 of the limit unit 5 well touches an end of the busbarand the connecting block 504 of the limit unit 5 well touches the secondbase 302 of the action unit 3, the busbar can not move along thedirection of movement of the connecting rod 1 when the connecting rod 1inserts into the busbar, such arrangement achieves a successful assemblyof the connecting rod. The driving mechanism comprises a spring, anoperation member used for compress the spring to store energy, a firstmember used for keeping the spring at a first compression state, asecond member used for keeping the spring at a second compression state,a third member used for keeping the spring at a third compression state,a first release member used for releasing the spring to move from thefirst compression state to the second compression state, and a secondrelease member used for releasing the spring to move from the secondcompression state to the third compression state. The end portion 303 ofthe action unit 3 is at a retraction state when the spring is at thefirst compression state or at the third compression state, see FIG. 9.The end portion 303 of the action unit 3 is at an exsertion state whenthe spring is at the second compression state, see FIG. 8. The operationmember connects a handle arranged out of the first base 301 and out ofthe second base 302, the spring is compressed by the operation memberwhen the handle is turned.

Referring to FIG. 10, the action unit 3 further comprises a first button305 and a second button 306, to trigger the first button 305 is to makethe first release member act, the spring moves from the firstcompression state to the second compression state. To trigger the secondbutton 306 is to make the second release member act, the spring movesfrom the second compression state to the third compression state.

Referring to FIG. 15, the loading unit 2 has an identical outline to afirst busbar 101 or a second busbar 102, the blind hole 201 is arrangedon a docking surface of the loading unit 2 and extends along a lengthdirection of the loading unit 2, an effective depth of the blind hole201 is half of axial length of the connecting rod 1, see FIG. 16. Theblind hole arranged to the loading unit has a clearance fit with theconnecting rod 1, such arrangement is convenient for the loading unit 2to remove for next assembly process after that the connecting rods 1 areassembled into the busbar and increases reusability of the loading unit2. Because the loading unit 2 has an identical outline to the busbar,the loading unit 2 is also applicable for the receiving unit 2 used forreceiving the busbar, such arrangement increases interoperability of theloading unit 2.

Referring to FIG. 3, the busbars docking platform has four receivingunits 7, they are a first receiving unit 701, a second receiving unit702, a third receiving unit 703 and a fourth receiving unit 704. Thefirst receiving unit 701 is used for receiving the loading unit 2 andboth the second receiving unit 702 and the third receiving unit 703 areused for receiving the first busbar 101 at a stage of assembling thefirst busbar 101. Both the first receiving unit 701 and the secondreceiving unit 702 are used for receiving the first busbar 101 and boththe third receiving unit 703 and the fourth receiving unit 704 are usedfor receiving the second busbar 102 at a stage of assembling the secondbusbar, see FIG. 4.

Referring to FIG. 2, the first threaded rod 501 is removably connectedby two first nuts clamping the limit block 503, the second threaded rod502 is removably connected by two second nuts clamping the limit block503, the first threaded rod 501 is connected by two third nuts clampingthe connecting block 504, the second threaded rod 502 is connected bytwo fourth nuts clamping the connecting block 504. The limit block 503is clamped at different positions on the threaded rod by adjusting nutsat different positions on the threaded rod to limit busbars of differentlength, such arrangement increases usability of the busbars dockingplatform for busbars of different length.

The embodiment of the invention also discloses an operation method ofthe busbars docking platform, the operation method comprises followingsteps.

S1 Trigger the first button 305 of the action unit 3 to make the firstrelease member act and to keep the end portion 303 of the action unit 3at the exsertion state, check positions of the limit shafts 703 arrangedto the first receiving unit 704, the second receiving unit 705, thethird receiving unit 706 and the fourth receiving unit 707, draw eachlimit shaft 703 out of the corresponding receiving unit 7 to vacate thereceiving groove 702 if the limit shaft 703 inserts into the receivinggroove 702.

S2 Put the first busbar 101 in the receiving groove 702 of the secondreceiving unit 705 and in the receiving groove 702 of the thirdreceiving unit 706 in a way that the docking surface of the busbar facesthe action unit 3, insert the limit shaft 703 into the second receivingunit 705 and insert the limit shaft 703 into the third receiving unit706, arrange the limit shaft 703 to insert into the receiving groove702, see FIG. 19.

S3 Put the loading unit 2 in the receiving groove 702 of the firstreceiving unit 704, the loading unit 2 is only used for determining aposition of the limit block 503 of the limit unit 5 at present, so it isno need for the loading unit 2 to receive the connecting rod 1.

S4 Arrange a docking surface of the first busbar 101 to touch a dockingsurface of the loading unit 2, arrange a surface of the loading unit 2away from the docking surface to touch the end portion 303 of the actionunit 3, adjust and fasten the limit block 503 of the limit unit 5 toarrange the limit block 503 to touch a surface away from the dockingsurface of the first busbar 101, see FIG. 3.

S5 Remove the loading unit 2 from the busbars docking platform.

S6 Load the connecting rod 1 to the loading unit 2, see FIG. 14, put theloading unit 2 already loaded with the connecting rod 1 inliquid-nitrogen for deep-freezing in such a way that the connecting rod1 is completely covered by the liquid-nitrogen for 5 minutes.

S7 Trigger the second button 306 of the action unit 3 to make the secondrelease member act so as to retract the end portion 303 of the actionunit 3 and to keep the end portion 303 at a retraction state.

S8 Turn the handle 304 of the action unit 3 to compress the spring ofthe driving mechanism and to keep the spring at a first compressionstate, heat the docking surface of the first busbar 101 to reach atemperature of over 200 celsius degrees.

S9 Take the loading unit 2 loaded with the connecting rod 1 out ofliquid-nitrogen, put the loading unit 2 in the receiving groove 702 ofthe first receiving unit 704, arrange the surface away from the dockingsurface of the loading unit 2 against the end portion 303 of the actionunit 3, insert the limit shaft 703 into the first receiving unit 704 toinsert the limit shaft into the receiving groove 702, see FIG. 21.

S10 Trigger the first button 305 of the action unit 3 to make the firstrelease member act so as to exsert the end portion 303 of the actionunit 3 to impact the loading unit 2 so that the connecting rod 1 on theloading unit 2 inserts into a pre-hole of the first busbar 101, see FIG.22 and FIG. 17. Because a deep-freezing process for the connecting rod 1and a heat process for the pre-hole of the busbar change assemblyrelation between the connecting rod 1 and the pro-hole of the busbarfrom interference fit to clearance fit, it is only need to impact theconnecting rod quickly into the pre-hole when the connecting rod 1 isassembled, it is no necessary for the end portion 303 of an action unit3 to have much thrust force. Clearance fit between the connecting rod 1and the pre-hole of the busbar after heat and freezing process combinedwith chamfer on an end surface of the connecting rod 1 also can reachsuccessful assembly between the connecting rod 1 and the pre-hole underhigh speed impact of the action unit 3 even if coaxiality between theconnecting rod 1 and the pre-hole is not very good. Arrangement that aplurality of connecting rods 1 can be loaded simultaneously to theloading unit 3 increases docking efficiency for busbars. Because the endportion 303 of the action unit 3 impacts the loading unit 2 other thanthe connecting rod 1, hypothermia of the connecting rod 1 can not beeffected by impact from the action unit 3, the connecting rod 1 stillkeeps at shrinkage state so as to inserts easily into the pre-hole ofthe busbar.

S11 Trigger the second button 306 to make the second release member actso as to retract the end portion 303 of the action unit 3, see FIG. 23.

S12 Draw the limit shaft 703 out of the receiving unit 7 to take thefirst busbar 101 and the loading unit 2 out from the receiving groove702 of the receiving unit 7, remove the loading unit 2 to finishassembling the connecting rod 1 into the first busbar 101, see FIG. 24.Because the limit shaft 703 movably inserts into the receiving block701, it is convenient for the receiving groove 702 to change fromopenness to closure according to operation needs, openness is convenientto put the busbar, and closure is used to stop the busbar from movingalong its width direction.

S13 Trigger the first button 305 to make the first release member actafter the spring of the driving mechanism is compressed and kept at thefirst compression state by turning the handle.

S14 Put the second busbar 102 in the receiving groove 702 of the thirdand fourth receiving units 706,707 in a way that the docking surface ofthe second busbar 102 faces the action unit 3, insert he limit shaft 703into the third receiving unit 706 and insert the limit shaft 703 intothe fourth receiving unit 707 to insert the limit shaft 703 into thereceiving groove 702.

S15 Put the first busbar 101 assembled with the connecting rod 1 betweenthe end portion 303 of the action unit 3 and the second busbar 102 toarrange that the docking surface of the first busbar 101 touches thedocking surface of the second busbar 102 and that the surface away fromthe docking surface of the first busbar 101 touches the end portion 303of the action unit 3, adjust and fasten the limit block 503 of the limitunit 5 to arrange the limit block 503 to touch a surface away from thedocking surface of the second busbar 102. The first busbar 101 is onlyused for determining a position of the limit block 503 of the limit unit5 at present, so it is no need for the first busbar 101 alreadyassembled with the connecting rod 1 to be housed completely in thereceiving groove 702 of the receiving unit 7, see FIG. 4.

S16 Remove the first busbar 101 already assembled with the connectingrod 1 and then put the first busbar 101 assembled with the connectingrod 1 in liquid-nitrogen for deep-freezing in such a way that theconnecting rod 1 is completely covered by the liquid-nitrogen for 5minutes.

S17 Trigger the second button 306 of the action unit 3 to make thesecond release member act so as to retract the end portion 303 of theaction unit 3 and to keep the end portion 303 at the retraction state,see FIG. 5.

S18 Turn the handle 304 of the action unit 3 to compress the spring ofthe driving mechanism and to keep the spring at the first compressionstate, heat the docking surface of the second busbar 102 to reach atemperature of over 200 celsius degrees.

S19 Take the first busbar 101 already assembled with the connecting rod1 out of liquid-nitrogen and then put the first busbar 101 alreadyassembled with the connecting rod 1 in the receiving groove 702 of thefirst receiving unit 704 and in the receiving groove 702 of the secondreceiving unit 705 to arrange the surface away from the docking surfaceof the first busbar 101 against the end portion 303 of the action unit3, insert the limit shaft 703 into the first receiving unit 704 andinset the limit shaft 703 into the second receiving unit 705.

S20 Trigger the first button 305 of the action unit 3 to make the firstrelease member act so as to exsert the end portion 303 of the actionunit 3 to impact the first busbar 101 so that the connecting rod 1 onthe first busbar 101 inserts into a pre-hole of the second busbar 102,see FIG. 6

S21 Trigger the second button 306 of the action unit 3 to make thesecond release member act so as to retract the end portion 303 of theaction unit 3.

S22 Draw the limit shaft 703 out of the receiving unit 7 to take thefirst busbar 101 and the second busbar 102 out from the receiving groove702 of the receiving unit 7, the connecting rod 1 is assembled in thefirst busbar 101 and the second busbar 102 so that the first busbar 101and the second busbar 102 are docked together well, see FIG. 7.

The operation method of busbars docking platform disclosed aboveachieves that a plurality of connecting rods are assembledsimultaneously into a busbar in stages and then two busbars are dockedtogether well, so the invention also discloses a busbars docking method,the method comprises arranging a deep-freezing process for a pluralityof connecting rods 1 after been loaded in the loading unit 2, arranginga heat process for a docking surface of the first busbar101, arrangingthe action unit 3 to impact the loading unit 2 so that a plurality ofconnecting rods 1 are axially inserted into corresponding pre-holes onthe docking surface of the first busbar, arranging a deep-freezingprocess for the connecting rod 1 after been assembled in the firstbusbar 101 and arranging a heat process for the docking surface of thesecond busbar 102, arranging the action unit 3 to impact the secondbusbar 102 so that pre-holes on the docking surface of the second busbar102 are axially sheathed on the corresponding connecting rods 1assembled to the docking surface of the first busbar 101.

The invention claimed is:
 1. A busbars docking platform comprising: aloading unit (2), an action unit (3), a limit unit (5), and a supportunit (6); wherein the loading unit (2) having a blind hole (201) on adocking surface for receiving a connecting rod (1), the blind hole (201)having a clearance fit with the connecting rod (1), the action unit (3)being used for impacting the loading unit (2) or a busbar to push theconnecting rod (1) into a pre-hole on the busbar, the limit unit (5)being used for stopping the busbar from moving along a longitudinaldirection of the busbar; wherein the support unit (6) comprising: afirst shaft (601), a second shaft (602) parallel to the first shaft(601), a receiving unit (7) slidably connecting with the first shaft(601) and the second shaft (602), a trestle used for supporting thefirst shaft (601) and the second shaft (602), and a pedestal used forsupporting the trestle; wherein the receiving unit (7) comprising: amounting plate, a sliding block removably connected to the mountingplate, a receiving block (701) cooperating with the busbar, a receivinggroove (702) penetrating through the receiving block (701) to receivethe busbar along a width direction of the busbar, and a limit shaft(703) movably inserting into the receiving block (701) for going in andout of the receiving groove (702) to stop the busbar from moving alongthe width direction; wherein the receiving groove (702) being arrangedaxially with the first shaft (601) and between the first shaft (601) andthe second shaft (602), wherein the limit unit (5) comprising: a firstthreaded rod (501) and a second threaded rod (502) both parallel to thefirst shaft (601), a limit block (503) removably connecting with thefirst threaded rod (501) and the second threaded rod (502), and aconnecting block (504) connecting with the first threaded rod (501) andthe second threaded rod (502) and cooperating with the action unit (3);wherein the action unit (3) comprising: a first base (301) fixedlyconnecting between the first shaft (601) and the second shaft (602), asecond base (302) fitting with the connecting block (504) of the limitunit (5), an end portion (303) outwardly extending from the first base(301) to impact the busbar, a first button (305) to make a first releasemember act, a second button (306) to make a second release member act,and a driving mechanism housed in the first base (301) and the secondbase (302) to drive the end portion (303).
 2. The busbars dockingplatform according to claim 1, wherein the driving mechanism comprises:a spring, an operation member used for compress the spring to storeenergy, a first member used for keeping the spring at a firstcompression state, a second member used for keeping the spring at asecond compression state, a third member used for keeping the spring ata third compression state, the first release member used for releasingthe spring to move from the first compression state to the secondcompression state, and the second release member used for releasing thespring to move from the second compression state to the thirdcompression state; the end portion (303) of the action unit (3) being ata retraction state when the spring is at the first compression state orat the third compression state, the end portion (303) of the action unit(3) being at an exsertion state when the spring is at the secondcompression state; the spring moving from the first compression state tothe second compression state when the first release member acts aftertriggering the first button (305); the spring moves from the secondcompression state to the third compression state when the second releasemember acts after triggering the second button (306).
 3. The busbarsdocking platform according to claim 2, wherein the operation memberconnects to a handle arranged out of the first base (301) and out of thesecond base (302), the spring being compressed by the operation memberwhen the handle is turned.
 4. The busbars docking platform according toclaim 1, wherein the loading unit (2) has an identical outline to afirst busbar (101) or a second busbar (102), the blind hole (201) beingarranged on a docking surface of the loading unit (2) and extendingalong a length direction of the loading unit (2), an effective depth ofthe blind hole (201) being half of axial length of the connecting rod(1).
 5. The busbars docking platform according to claim 1, wherein thedocking platform has four receiving units (7), a first receiving unit(704) being used for receiving the loading unit (2) and both a secondreceiving unit (705) and a third receiving unit (706) being used forreceiving a first busbar at a stage of assembling the first busbar(101), the first receiving unit (704) and the second receiving unit(705) both being used for receiving the first busbar (101) and the thirdreceiving unit (706) and a fourth receiving unit (707) both being usedfor receiving a second busbar (102) at a stage of assembling the secondbusbar.
 6. The busbars docking platform according to claim 1, whereinthe first threaded rod (501) is removably connected by two first nutsclamping the limit block (503), the second threaded rod (502) beingremovably connected by two second nuts clamping the limit block (503),the first threaded rod (501) being connected by two third nuts clampingthe connecting block (504), the second threaded rod (502) beingconnected by two fourth nuts clamping the connecting block (504).